Okay. I tried pretending this thread didn't exist. Didn't work. So now I'mma throw up all over you.
Firstly, I am sick and tired of hearing about the Tyrannosaurus Rex. Sic semper Tyrannosaurus Rex! KillaBee, to make your point (and not sound like all of your information on dinosaurs came from reading little kids' books), you could have motioned me towards the Sauropods, either the Macronarians or the Diplodocoids. Tyrannosaurus...geesh.
KillaBee is a prime example of what's happened with dinosaurs recently. KillaBee represents the classical thought, that dinosaurs were big, dumb, sluggish lizards, cold-blooded reptilians without much zest for life. Recent discoveries and additions to our limited fossil record shows this is not the case.
One piece of literature that promoted an active dinosaurian lifestyle was a piece of fiction written by prominent paleontologist Dr. Robert T. Bakker. This piece of fiction, entitled Raptor Red, is not really heard of outside of the paleontology circle; it won Dr. Bakker no awards. But it helped the shift in paradigm from big, dumb and slow to active and vibrant.
The discovery of feather precursors appearing on members of the Dromaeosauridae family threw paleontologists for a loop. True, Archaeopteryx is praised as the missing link between Maniraptora and Avialae, but the thought of feathers being developed as far back as Deinonychus and Velociraptor was a novel concept. Now, even though the Dromaeosauridae family tree still functions as a polytomy (four branches are currently in dispute) on the cladogram, it is a little known fact that the raptors of old evolved into the raptors of new.
I brought up the Utahraptor because they are Speilberg's raptors. Not Velociraptor, and not even Deinonychus; only Utahraptor holds that title. Unfortunately, the fossil record of the Utahraptor is very incomplete, featuring only a few fragments and shards. However, paleontologists have been able to discern that it is twice the size of Deinonychus, which would also include its head and, therefore, its cranial capacity, which is--sorry to say--why I very much dispute the findings of KillaBee.
Though I can definitely see why Roundy would hold that this is all speculation (which it is, and even my professor, Christopher Brochu, admitted to this being mostly true when it comes to the fossil record), but I cannot see why we have to rule out the possibility of dinosaurs building boats simply because we humans are too stubborn to think outside ourselves. A dinosaurian culture would most definitely not be like our own, since their materials would have to be custom-fit to their strengths and weaknesses. Which is why I believe anyone flatly refusing the possibility of tools fitted to creatures without thumbs to be nothing more than an arrogant monkey moaning over the loss of its tail.
Not to mention the simple fact that we weren't there.
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